AWS SAA vs. CLF – Can I skip one?
AWS are known for their famous highly demanded Solutions Architect Associate (SAA) Certificate, and many thinks that it is the first step with AWS and Cloud Computing, the question now is it?, or is there any step that should be taken before, like the AWS Cloud Practitioner CLF exam?.
in this blog post we will discover and compare the agenda and the main pillars each exam teach you, and see if it worth skipping CLF and start directly with SAA.
Cloud Concepts
Your very first chapter to start studying AWS CLF with will be the cloud concepts, this will give a general overview of what is the idea and concept of cloud computing, what would AWS provide regarding that, and are you about to experience.
Luckily this part is shared between both the exams of AWS CLF and SAA, and we’ll find a share for it here and there, to understand what we are about to start with such exams.
that makes them equal here, 1-1.
Security and Compliance
Having zero knowledge about cloud computing and the restrictions and differentiations that might occur with it, upon implementing a new network on the cloud for the first time will require Continue reading
OSPF Administrative Distance – How preferred is it
OSPF Administrative Distance, or OSPF AD, is the key of electing OSPF among other routing protocols (if existed) leading to the same target within the same routing table, in this blog post we will discover the basics and types of Administrative Distances for OSPF across multiple different platform.
Administrative Distance
For Cisco systems operating systems, regardless of their platforms, all the IOS-XE, IOS-XR, and NX-OS OS’s treats OSPF based on the “AD” which has the value of “110”.
Now the most important thing is not just to know the numerical value which will be useless without knowing its order of preference among the other routing protocol Administrative Distances.
OSPF AD with Cisco OS’s
The values will be as follows regarding the Static and Dynamic Routing Protocols:
- Direct = 0
- Static = 1
- eBGP = 20
- EIGRP = 90
- OSPF 110
- IS-IS = 115
- RIP = 120
- iBGP = 200
This Shows that OSPF routes to a specific target can be hidden if one of the dynamics (EIGRP or eBGP) routes was installed in the routing table, that also includes the Direct and Static as well.
Route Preference
Dealing with devices/platforms from Juniper Networks will get you to face and Continue reading
Network Digital Twins Work Best in PowerPoint
A friend of mine sent me the following question a few months ago:
I thought you might know the best way (currently) to create a digital clone of parts of a production network? The objective is to test changes against a test network as part of a CI/CD process. Ideally, there would be an automation that could replicate selected parts of a production network in a test network.
TL&DR: Sounds great, but you might be solving the wrong problem.
Network Digital Twins Work Best in PowerPoint
A friend of mine sent me the following question a few months ago:
I thought you might know the best way (currently) to create a digital clone of parts of a production network? The objective is to test changes against a test network as part of a CI/CD process. Ideally, there would be an automation that could replicate selected parts of a production network in a test network.
TL&DR: Sounds great, but you might be solving the wrong problem.
Practical Python For Networking: 4.3 – SMS Alerting – First Example – Video
This lesson walks through the first example script for setting up SMS alerting. Course files are in a GitHub repository: https://github.com/ericchou1/pp_practical_lessons_1_route_alerts Eric Chou is a network engineer with 20 years of experience, including managing networks at Amazon AWS and Microsoft Azure. He’s the founder of Network Automation Nerds and has written the books Mastering Python […]
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Privacy And Networking Part 2: Legal And Ethical Privacy
Given the arguments from the first article in this series, if privacy should be and is essential—what does the average network engineer do with this information? How does privacy impact network design and operations? To answer this question, we need to look at two other questions. First, what is private information, precisely? The network carries […]
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The Office of the Future Is All About Experience
Employee experience has now become the true north in office design and technology, and that will remain the case long after the pandemic has subsided.Practical Python For Networking: 4.2 – SMS Alerting – Python SDK And Environmental Variables – Video
This lesson describes how to install the Python SDK for Twilio so you can build SMS alerts. You can find the packages for this lesson in the GitHub repository that accompanies this course: https://github.com/ericchou1/pp_practical_lessons_1_route_alerts/tree/master/4_Packages Eric Chou is a network engineer with 20 years of experience, including managing networks at Amazon AWS and Microsoft Azure. He’s […]
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SD-WAN Is Not the Answer
SD-WAN addressed some of MPLS’s issues, but enterprises have struggled to realize the full potential of their large-scale SD-WAN networks. So what do we need instead?Everything Is Better with a GUI (even netsim-tools)
Some people think that everything is better with Bluetooth. They’re clearly wrong; according to the ancient wisdom of product managers working for networking vendors, everything is better with a GUI.
Now imagine adding network topology visualizer and GUI-based device access with in-browser SSH to an intent-based infrastructure-as-code virtual network function labbing tool. How’s that for a Bullshit Bingo winner1?
Everything Is Better with a GUI (even netlab)
Some people think that everything is better with Bluetooth (or maybe it’s AI these days). They’re clearly wrong; according to the ancient wisdom of product managers working for networking vendors, everything is better with a GUI.
Now imagine adding network topology visualizer and GUI-based device access with in-browser SSH to an intent-based infrastructure-as-code virtual network function labbing tool. How’s that for a Bullshit Bingo winner1?
Improving Application Environments in the Cloud
Running mission-critical applications in the cloud is possible with the right strategy and architecture.DMVPN vs MPLS VPN
DMVPN – Dynamic Multipoint VPN and MPLS VPN are two of the most popular VPN mechanisms. In this post, we will look at DMVPN vs MPLS VPN comparison, from many different aspects. At the end of this post, you will be more comfortable positioning these private VPN mechanisms.
DMVPN vs MPLS VPN
When we compare the two protocols, we look at many different aspects. For this comparison, I think very first we should say that DMVPN is a Cisco preparatory tunnel-based VPN mechanism but MPLS VPN is standard-based, RFC 2547, non-tunnel based VPN mechanism. Although, whether MPLS LSP is a tunnel or not is an open discussion in the networking community, we won’t start that discussion here again.
DMVPN and MPLS VPN over the Internet
Another important consideration for MPLS VPN vs DMVPN is, that DMVPN can be set up over the Internet but MPLS VPN works over private networks, Layer 2 or Layer 3 based private networks. DMVPN tunnels can come up over the Internet and inside the tunnels routing protocols can run to advertise the Local Area Networks subnets.
But MPLS requires Private network underlay.
Figure – DMVPN Networks can run over Internet or Private Networks
Continue reading
Network Break 378: Barracuda Gets A New Owner; Intel Buys Ananki For Private 5G
Take a Network Break! This week we cover several acquisitions including Barracuda Networks being bought by KKR, SailPoint being picked up by Thoma Bravo, Perforce buying Puppet, and Intel snapping up Ananki to get into the private 5G market. Plus more tech news.Tech Bytes: Why Wi-Fi 6E Is Off To A Fast Start (Sponsored)
Today on Tech Bytes podcast we talk with Aruba, a Hewlett Packard Enterprise company, about the evolution of Wi-Fi standards, why Aruba is seeing the fast take-up of Wi-Fi 6E, practical enhancements in 6E, and what to expect with Wi-Fi 7.
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